[ntp:hackers] Need info
Bjorn Gabrielsson
bg at lysator.liu.se
Mon Jun 13 13:18:02 PDT 2005
Venu,
There is (presently) a 13 sec offset between GPS time and UTC
time. NTP uses UTC. Are you sure your "GPS Clock" is showing UTC time?
--
Björn
"dharmaji venu gopal" <meetvenu58 at rediffmail.com> writes:
>
> Dear friends,
> I am running NTP(ver 4) with a refernce clock( GPS_NMEA driver ).
> The system is running on Redhat 7.3( 2.4.20-NANO Kernel ).
> The reference clock is a GPS Clock which gives output in NMEA format
> GPGGA/GPGLL at 9600 Baudrate. So I modified the ref_nmea.c which
> normally works at 4800 Baudrate.
>
> To see the system offset I did ntpq -p. Even though the offset is
> below 10 usec ( as shown by ntpq ), the system time(shown by xclock )
> is lagging by almost 15 sec to GPS Time ( shown by GPS Clock ).
>
> The ntp.conf file contains configuration for "127.127.20.1" (mode 2)
> with PPSAPI enabled and nothing is mentioned abt local clock. The
> system time zone is set to GMT.
>
> I just want to know if there's any problem in the setup/configuration.
>
> Regards,
> venu.
>
>
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